<template>
	<el-upload
		class="avatar-uploader"
		action="https://run.mocky.io/v3/9d059bf9-4660-45f2-925d-ce80ad6c4d15"
		:show-file-list="false"
		:on-success="handleAvatarSuccess"
		:before-upload="beforeAvatarUpload"
	>
		<img v-if="imageUrl" :src="imageUrl" class="avatar" />
		<el-icon v-else class="avatar-uploader-icon"><Plus /></el-icon>
	</el-upload>
</template>

<script lang="ts" setup>
import { ref } from 'vue'
import { ElMessage } from 'element-plus'
import { Plus } from '@element-plus/icons-vue'

import type { UploadProps } from 'element-plus'

const imageUrl = ref('')

const handleAvatarSuccess: UploadProps['onSuccess'] = (response, uploadFile) => {
	imageUrl.value = URL.createObjectURL(uploadFile.raw!)
}

const beforeAvatarUpload: UploadProps['beforeUpload'] = (rawFile) => {
	if (rawFile.type !== 'image/jpeg') {
		ElMessage.error('Avatar picture must be JPG format!')
		return false
	} else if (rawFile.size / 1024 / 1024 > 2) {
		ElMessage.error('Avatar picture size can not exceed 2MB!')
		return false
	}
	return true
}
</script>

<style scoped>
.avatar-uploader .avatar {
	width: 178px;
	height: 178px;
	display: block;
}
</style>

<style>
.avatar-uploader .el-upload {
	border: 1px dashed var(--el-border-color);
	border-radius: 6px;
	cursor: pointer;
	position: relative;
	overflow: hidden;
	transition: var(--el-transition-duration-fast);
}

.avatar-uploader .el-upload:hover {
	border-color: var(--el-color-primary);
}

.el-icon.avatar-uploader-icon {
	font-size: 28px;
	color: #8c939d;
	width: 178px;
	height: 178px;
	text-align: center;
}
</style>
